1969 merc 200 20hp phelon flywheel magneto no fire

[bktheking]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

Then if it's a simple magneto system start by cleaning the points, ohm out the coils to see if they are good. Check your wiring going to the points, make sure it hasn't rotted away.

 

[WOODCHUCKER]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

Then if it's a simple magneto system start by cleaning the points, ohm out the coils to see if they are good. Check your wiring going to the points, make sure it hasn't rotted away.

Has new points,not sure if i'm checking ohms on coils correctly.Disconnected hot and ground on both coils,sometimes I get continuity,if i jiggle ground wires on both,the ohms dance on meter like a cat on a hot tin roof.Get good readings from junction.I think both coils are bad???

 

[bktheking]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

Probably just interference from moving stuff around. You ready for this, my no spark was a reversed magneto cam. Yup, when I got the motor there was no keyway, just the cam and I moved it from the old powerhead to the new one as is. I called a guy on John's old merc site tonight, he says "flip the magnet cam", presto spark has returned.

 

[WOODCHUCKER]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

Probably just interference from moving stuff around. You ready for this, my no spark was a reversed magneto cam. Yup, when I got the motor there was no keyway, just the cam and I moved it from the old powerhead to the new one as is. I called a guy on John's old merc site tonight, he says "flip the magnet cam", presto spark has returned.

Sounds like you've got your problem solved;good news.By the way,nice picture,great lookin oldie!

 

[bktheking]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

You didn't have the cam off did you?/???/???

Thanks, went down to -7C last night, they are shivering in the garage!

 

[WOODCHUCKER]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

You didn't have the cam off did you?/???/???

Thanks, went down to -7C last night, they are shivering in the garage!

Holy Cow,a new motor would never have stood it.Been in low 30's here with snow flurries coming by weekend.

 

[bktheking]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

Back to your motor, what have you done so far?

 

[WOODCHUCKER]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

Back to your motor, what have you done so far?

Had to lay off it today,getting agitated with it,the new points I put in,were set at TDC both cylinders and gapped at .020. Can't get them to close when I turn the crank.What am I doing wrong?

 

[WOODCHUCKER]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

Not certain about the coils,shows continuity but my meter is cheap and can't read actual ohm reading.Having trouble getting new points to close after each were set at TDC on each cylinder.Can take cam off and turn stator around by hand and still points won't close. I'm not an electrician,just trying to get this thing running....i'm running out of patience. SOMEBODY;PLEASE GIVE ME SOME INFO AS WHAT TO DO. Thank You

 

[Laddies]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

Point gap is set at high cam, not at TDC. The points close between TDC and max spark advance depending on the throttle setting. You real need to invest in a manual as you don't seem to understand the basic mechanical operation of the engine

 

[WOODCHUCKER]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

Point gap is set at high cam, not at TDC. The points close between TDC and max spark advance depending on the throttle setting. You real need to invest in a manual as you don't seem to understand the basic mechanical operation of the engine

Thanks Laddie,you just helped me a lot,went and looked at my seloc manual again.I set points as if powerhead and both coil wires had been disconnected. Powerhead has never been took apart,just stupid of me not to read more carefully!

 

[WOODCHUCKER]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

UPDATE- got motor purring like a kitten,had bad coils,had trouble getting maximum spark advance adjusted,cleaned carb,installed new impeller.It is a good feeling to know that this old motor was purchased cheap and I,with help from friends on this site have brought it back to running.Next project;new paint and maybe new decals. Thanks to those who have responded to help. Old Woodchucker

 

[jeffer]

Re: 1969 merc 200 20hp phelon flywheel magneto no fire

not firing,installed new points,condensers,good compression,is it possible for both coils to be bad? Does stop button have any effect on firing,the push section is missing? Can't afford to guess as it is expensive for this old motor.Any help appreciated.

All kinds of facilities are provided during preparation. So both coils can not be bad or good at a time. It may be that it was bad previously.

So you can contact with buyer for this. You will get proper solution. :redface: